Tulathromycin A

Tulathromycin A (Tulathromycin), a macrolide antibiotic, inhibits protein synthesis (IC₅₀=0.26 µM) by targeting bacterial ribosome. Tulathromycin A is used for the research of respiratory disease in cattle and swine. Immunomodulatory effects^[1][2][3]. In Vitro: Tulathromycin A (Tulathromycin) represents the first member of a novel subclass of macrolides, known as triamilides^[1].
Tulathromycin A (0.02 to 2.0 mg/mL) induces time- and concentration-dependent apoptosis in neutrophils, which enhances their subsequent clearance by macrophages^[3]. In Vivo: In the lungs of both A pleuropneumoniae- and zymosan-challenged pigs, Tulathromycin A (2.5 mg/kg, IM) promotes leukocyte apoptosis and efferocytosis and inhibites proinflammatory leukotriene B4 production, with a concurrent reduction in leukocyte necrosis relative to that of control pigs. Tulathromycin A also attenuates the degree of lung damage and lesion progression in A pleuropneumoniae-inoculated pigs^[3].